Mercersburg Academy, PA, Chances

I am a 16 year old girl applying for the 2016-2017 school year as a junior boarder. I will not be needing financial aid.
I have been a girl scout since kindergarten (this is my 11th year) and I got my silver award last year. I have played guitar for about a year and played piano for three years. I have played basketball for two years and am interested in starting to play golf. My freshman year I was in Interact club. This year (my sophomore year) I am in model judiciary. I also did JV cheerleading for my school this year. I volunteer at my local assisted living home regularly. I also have a part time job at Target.
I am in all honors classes at school. I am in Spanish 3 and Algebra 2 this year. My GPA for last year was a 3.47 and my first quarter grades for this year were a mid of As and Bs.
I am a very hard worker and love getting involved in my school and community. I have interviewed and toured Mercersburg campus and seemed to get along well with the admissions lady.
What are my chances of getting in to Mercersburg? And if you go there, do you have any advice or tips on what they really look for in students and on applications?
Thanks!

My kids go to Mercersburg, so I love to encourage discussion about this great school, and I wish you the best of luck in the admissions process. You sound like someone who would do well at Mercersburg - or anywhere else - because you are a hard worker who loves to get involved. However, chances posts are pointless.